The Greek IBBY National Section is the Circle of the Greek Children's Book, a non-profit, non-governmental cultural association, officially founded in 1969 by 25 children’s literature personalities who had been in contact with IBBY since 1958. Today it has 347 individual members (writers, illustrators, translators, publishers, librarians, university professors, researchers, teachers, philologists and psychologists). A seven-member Board elected biennially by the NS General Assembly administers it.

IBBY Greece participates in almost every IBBY activity. It has developed a wide range of national activities that include seminars, ICBD celebrations, annual prizes to children’s books and personalities promoting children’s literature, establishment and/or support of children’s libraries, as well as various publications, such as anthologies, NS seminars’ papers, an annual bulletin, other informative material. The enthusiasm, hard work and the endeavours of IBBY Greece has led to an impressive flourishing of Greek children's literature in the last three decades.